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Physics-

General

Easy

Question

In the arrangement as shown masses of block A and B are 4 m and m respectively. The coefficient of friction between all surfaces is 0.05. What should be ratio of $fraction numerator P over denominator Q end fraction$ so that both blocks A and B move with same acceleration of $5 text end text m divided by s to the power of 2 end exponent ? open parentheses text end text g equals 10 text end text m divided by s e c to the power of 2 end exponent close parentheses$

40
32
2.32
30

The correct answer is: 2.32

Related Questions to study

The coefficient of frictions and masses of various blocks are shown. A force 2 N is applied on block B. What will be the acceleration of block B after 4 seconds $open parentheses g equals 10 text end text m divided by s to the power of 2 end exponent close parentheses 1.6 text end text m$

The coefficient of frictions and masses of various blocks are shown. A force 2 N is applied on block B. What will be the acceleration of block B after 4 seconds $open parentheses g equals 10 text end text m divided by s to the power of 2 end exponent close parentheses 1.6 text end text m$

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The system shown in figure is released

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Two rough blocks A and B, A placed over B, move with acceleration $stack a with rightwards arrow on top A$ and $stack a with rightwards arrow on top B$ , velocities $stack v with rightwards arrow on top A$ and $stack V with rightwards arrow on top subscript B end subscript$ by the action of horizontal forces $stack F with rightwards arrow on top subscript A end subscript$ and $stack F with rightwards arrow on top subscript B end subscript$ respectively. When no friction exists between the blocks A and B at all times

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In the figure, $m subscript A end subscript equals 2 text end text k g$ and $m subscript B end subscript equals 4 text end text k g$ . For what minimum value of F, A starts slipping over B: $open parentheses g equals 10 text end text m divided by s to the power of 2 end exponent close parentheses$

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The coefficient of static friction between the two blocks is $mu$ and the table is smooth. The maximum horizontal force that can be applied to the block of mass M so that the blocks move together is

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Two blocks are moving under the action of external force F and 2F. The force of friction between the blocks so that they move without any relative sliding between them is :

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Two block of masses $m subscript 1 end subscript$ and $m subscript 2 end subscript$ are connected with a massless unstretched spring and placed over a plank moving with an acceleration 'a' as shown in figure. The coefficient of friction between the blocks and platform is $mu$ .

Two block of masses $m subscript 1 end subscript$ and $m subscript 2 end subscript$ are connected with a massless unstretched spring and placed over a plank moving with an acceleration 'a' as shown in figure. The coefficient of friction between the blocks and platform is $mu$ .

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Blocks $A & text end text B$ are moving together on Rough horizontal surface.
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Two blocks of masses m and M are kept on a rough horizontal surface. The coefficient of friction between M and m is $mu subscript 1 end subscript$ and between M and ground is $mu subscript 2 end subscript$ . If both the blocks are pushed horizontally in same direction with equal speed $v subscript 0 end subscript$ .

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A wooden block with mass 2 m is attached to the shaft of an electric motor mounted on a plank free to move on the floor. The mass of the plank and motor is m. The initial seperation between the block and motor is l. When the motor is switched on, block moving with acceleration a. If $mu$ is the coefficient of friction time after which the two bodies collide is

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A block of mass $m$ is placed on another block of mass M which itself is lying on a horizontal surface. The coefficient of friction between two blocks is $mu subscript 1 end subscript$ and that between the block of mass M and horizontal surface is $mu subscript 2 end subscript$ . What maximum horizontal force can be applied to the lower block so that the two blocks move without separation ?

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Two blocks A and B of same mass are placed at the two ends of a plank C, which is placed on a smooth floor. The coefficient of friction between A and C and B and C is same and A and B both are given same velocity $V subscript 0 end subscript$ at the same time in the direction as shown. Find the correct graph :

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